## Startup showcase (1-1 of 1)

### Penpot
Collaborative interface design and prototyping on the web

61,755 GitHub stars (penpot/penpot, MPL-2.0, 2026-10-27)

Website · Design & creative · by Kaleidos · launched 2015-12-29. https://penpot.app

- Frontend: ClojureScript, React
- Backend: Clojure
- Database: PostgreSQL
- Realtime: Valkey

Most used: Clojure (1), ClojureScript (1), PostgreSQL (1), React (1), Valkey (1).

**Caveats (show these word for word)**
- Stacks are read from each product's public code (manifests and environment templates) on the date shown; a service listed there may be optional or used only by the hosted version. GitHub and App Store figures are as read on their checked_at date.

Confidence: medium.

Use estimate_cost or audit_stack with the priced vendor ids to see what a stack like this costs.